TITRATION OF A STRONG BASE WITH A STRONG ACID

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Presentation transcript:

TITRATION OF A STRONG BASE WITH A STRONG ACID Lujain Alabdulwahed 201100046 Laila Alkadi 201100931

Objectives: The objective of this laboratory exercise is to determine the molarity of hydrochloric acid in the given sample. To learn lab skills to prepare and dilute a standard solution; to find the strength of an acid or a basic solution.

Apparatus: 50mL burette. 5mL volumetric pipette. 0.1M NaOH. Hydrochloric acid. Phenolphthalein indicator. Burette stand. Two 250mL Erlenmeyer flask. Wash bottle filled with distilled water. Funnel.

First: add hydrochloric acid in a conical flask using the pipette.

Second: add a couple of drops from phenolphthalein indicator.

Third: add hydroxide solution using burette Third: add hydroxide solution using burette. (Add until the color stays pink)

Fourth: Repeat what you did again.

Fifth: Do your calculations.. V1 is the volume of hydrochloric acid. V2 is the average volume which is the two volumes/2. m1 is already known (0.1 M) And now you have to find m2 m1v1=m2v2

Summary From this experiment we have learned that: acids turn the color of phenolphthalein indicator into pink. sour to taste. and reacts with OH-.

Thank you for your attention  Any Questions?